Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 26-10-2022 and time 10:00:07 (UTC) in region 3 km SE San Miniato (PI)

A magnitude ML 1.0 earthquake occured in region: 3 km SE San Miniato (PI), on

  • 26-10-2022 10:00:07 (UTC)
  • 26-10-2022 12:00:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6620, 10.8750 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Miniato PI 3 27934 27934
Empoli FI 9 48109 76043
Fucecchio FI 9 23618 99661
Montopoli in Val d'Arno PI 9 11148 110809
Santa Croce sull'Arno PI 10 14601 125410
Castelfiorentino FI 10 17504 142914
Palaia PI 10 4612 147526
Cerreto Guidi FI 11 10870 158396
Castelfranco di Sotto PI 11 13427 171823
Capraia e Limite FI 12 7670 179493
Montaione FI 13 3700 183193
Montelupo Fiorentino FI 14 14098 197291
Vinci FI 15 14604 211895
Gambassi Terme FI 15 4870 216765
Santa Maria a Monte PI 15 13253 230018
Montespertoli FI 16 13537 243555
Lamporecchio PT 18 7508 251063
Peccioli PI 18 4807 255870
Capannoli PI 18 6381 262251
Larciano PT 18 6394 268645
Certaldo FI 18 16121 284766
Pontedera PI 19 29223 313989
Ponsacco PI 20 15611 329600

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km W of Scandicci (50609 inhabitants)
30 Km SW of Prato (191150 inhabitants)
31 Km S of Pistoia (90315 inhabitants)
33 Km W of Firenze (382808 inhabitants)
36 Km SE of Lucca (89046 inhabitants)
39 Km E of Pisa (89158 inhabitants)
47 Km E of Livorno (159219 inhabitants)
53 Km NW of Siena (53903 inhabitants)
55 Km E of Viareggio (62467 inhabitants)
72 Km SE of Massa (69479 inhabitants)
78 Km SE of Carrara (63133 inhabitants)
84 Km W of Arezzo (99543 inhabitants)
97 Km SE of La Spezia (93959 inhabitants)
100 Km SW of Bologna (386663 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.0 2022-10-26
10:00:07		 43.6617 10.8748 11 2022-10-26
10:08:54		 Sala Sismica INGV-Roma 111201771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-10-26 10:00:07 ± 0.18
Latitude 43.6617 ± 0.0081
Longitude 10.8748 ± 0.0087
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 111201771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 870
Semi-minor axis of confidence ellipse (meter) 536
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 35
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.44876
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 111201771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-10-26 10:08:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2022-10-26T10:01:57.20 3.0 negative manual Pg 20.969999 0
IV.LEVAN.EHZ. 2022-10-26T10:01:51.53 3.0 undecidable manual Pg 18.190001 0
GU.ROTM.HHZ. 2022-10-26T10:01:18.34 3.0 undecidable manual Sg 6.38 0
IV.GIGS.HHZ. 2022-10-26T10:01:15.40 3.0 undecidable manual Sn 0.22 0
MN.TRI.HHZ. 2022-10-26T10:00:56.34 3.0 negative manual Pn 2.74 0
ST.ZIAN.EHZ. 2022-10-26T10:00:53.65 3.0 undecidable manual Pg 3.32 0
CH.MUGIO.HHZ. 2022-10-26T10:00:53.52 3.0 positive manual Pg 3.7 0
IV.FRON.EHZ. 2022-10-26T10:00:52.17 3.0 undecidable manual S 0.74 0
ST.VARA.EHZ. 2022-10-26T10:00:41.65 3.0 negative manual Pn -1.92 0
IV.SFI.EHZ. 2022-10-26T10:00:33.10 3.0 undecidable manual S -0.75 0
IV.PLMA.HHZ. 2022-10-26T10:00:25.62 3.0 positive manual P 0.92 0
IV.BDI.HHZ. 2022-10-26T10:00:23.64 0.6 undecidable manual S 333 49.8168 50 0.15 48
GU.POPM.HHZ. 2022-10-26T10:00:21.70 0.6 undecidable manual S 348 43.5231 50 -0.13 48
IV.MPPT.EHZ. 2022-10-26T10:00:20.29 0.6 undecidable manual S 28 37.0296 50 0.19 48
GU.MAIM.HHZ. 2022-10-26T10:00:20.60 0.3 undecidable manual S 312 41.4252 50 -0.67 63
IV.OSSC.HHZ. 2022-10-26T10:00:18.98 0.3 undecidable manual S 117 33.5442 50 -0.17 73
IV.BDI.HHZ. 2022-10-26T10:00:17.27 0.3 undecidable manual P 333 49.8168 50 0.46 67
IV.PII.HHZ. 2022-10-26T10:00:17.58 0.3 undecidable manual S 284 28.8489 50 -0.33 72
GU.POPM.HHZ. 2022-10-26T10:00:16.18 0.6 negative manual P 348 43.5231 50 0.33 46
GU.MAIM.HHZ. 2022-10-26T10:00:15.74 0.1 undecidable manual P 312 41.4252 50 0.21 96
IV.OSSC.HHZ. 2022-10-26T10:00:14.24 0.1 undecidable manual P 117 33.5442 50 -0.06 100
IV.CRMI.HHZ. 2022-10-26T10:00:14.41 0.3 undecidable manual S 29 17.0718 122 -0.26 74
IV.MPPT.EHZ. 2022-10-26T10:00:14.90 0.1 undecidable manual P 28 37.0296 50 0.05 100
IV.PII.HHZ. 2022-10-26T10:00:13.84 0.1 negative manual P 284 28.8489 50 0.26 97
IV.CRMI.HHZ. 2022-10-26T10:00:11.70 0.3 undecidable manual P 29 17.0718 122 -0.02 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHN. ML:1.0 0.00007855000000000001 0.14 AML other m 2022-10-26T10:00:14.59
IV.CRMI.HHE. ML:0.9 0.0000712 0.5 AML other m 2022-10-26T10:00:14.62
IV.OSSC.HHE. ML:1.0 0.00003825 1.5 AML other m 2022-10-26T10:00:20.10
IV.OSSC.HHN. ML:0.9 0.0000357 0.4 AML other m 2022-10-26T10:00:20.48
GU.POPM.HHE. ML:1.0 0.000036049999999999995 0.86 AML other m 2022-10-26T10:00:22.49
GU.POPM.HHN. ML:1.1 0.000038849999999999996 1.28 AML other m 2022-10-26T10:00:23.10
IV.PII.HHE. ML:1.0 0.000045196945000000004 0.4608 AML other m 2022-10-26T10:00:17.68
IV.PII.HHN. ML:1.1 0.00006524361500000001 0.0576 AML other m 2022-10-26T10:00:13.91
IV.BDI.HHE. ML:1.0 0.000023038065 0.9216 AML other m 2022-10-26T10:00:25.57
IV.BDI.HHN. ML:0.9 0.000021017580000000002 0.1408 AML other m 2022-10-26T10:00:23.00
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download